Cave Johnson
Member
They wouldn't have Sony's marketing money if they went multiplatform. Also, Adam Boyes specifically said they're throwing in marketing + money. Nobody ever said none of Sony's funds are going to core development. Suzuki only said that the majority comes from Kickstarter.
Except that they clearly have no money for a "multi-platform" development as indicated by the stretch goals required just to get the game to have deeper content. If MS ponies up funding to create an X1 version, I'm pretty sure that will be acceptable. It's a kickstarter game and there has been no indication that an "exclusive" marketing agreement was made. Problem is, I don't think MS can fare well by sponsoring the title because:
A) The title was promoted on PS4 - a console with the largest share of the console market
B) The potential sales of the X1 would not break even in direct funding to The MS port and marketing (also see A.)
C) It's better to wait for the game to be completed then snag a port if proven successful.